Gastric lavage in acute organophosphorus pesticide poisoning (GLAOP)--a randomised controlled trial of multiple vs. single gastric lavage in unselected acute organophosphorus pesticide poisoning.

Background: Organophosphorus (OP) pesticide poisoning is the most common form of pesticide poisoning in many Asian countries. Guidelines in western countries for management of poisoning indicate that gastric lavage should be performed only if two criteria are met: within one hour of poison ingestion and substantial ingested amount. But the evidence on which these guidelines are based is from medicine overdoses in developed countries and may be irrelevant to OP poisoning in Asia.